Influence of pocket shape on numerical response of geocell reinforced foundation systems

Gedela, R; Karpurapu, R

Influence of pocket shape on numerical response of geocell reinforced foundation systems

Gedela, R Karpurapu, R

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Publisher:: Thomas Telford Ltd.
Publication Type:: Journal Article
Citation:: Geosynthetics International, 2021, 28, (3), pp. 327-337
Issue Date:: 2021-06

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Field	Value	Language
dc.contributor.author	Gedela, R
dc.contributor.author	Karpurapu, R
dc.date.accessioned	2022-07-03T01:11:46Z
dc.date.available	2022-07-03T01:11:46Z
dc.date.issued	2021-06
dc.identifier.citation	Geosynthetics International, 2021, 28, (3), pp. 327-337
dc.identifier.issn	1072-6349
dc.identifier.issn	1751-7613
dc.identifier.uri	http://hdl.handle.net/10453/158540
dc.description.abstract	<jats:p> Geocells are three-dimensional cellular expandable mats used to improve the load-carrying capacity of weak subgrades. The expanded geocell pockets take the shape of a honeycomb connected to their neighbouring pockets. This manuscript deals with the importance of considering the exact shape of the geocell pockets in three-dimensional numerical modelling. The data for the calibration of the numerical models was obtained through laboratory plate load tests. The numerical simulations were carried out using finite difference software, Fast Lagrangian Analysis of Continua in Three Dimensions (FLAC<jats:sup>3D</jats:sup>). The walls of the geocell were modelled using geogrid elements having only tensile load capacity. The interfaces between the geocell walls and the infill soils were modelled using Mohr-Coulomb yield criterion. Three shapes of geocell pockets, viz. an exact honeycomb shape and simplified shapes (square and diamond), were considered in the numerical simulations. The numerical models with an exact shape of pockets have shown better agreement with experimental data, while the models with approximated shape overestimated the actual load capacity. The paper describes the modelling approach and the reasons for more accurate numerical predictions with the exact shape of geocell pockets compared to simplified pocket shapes. </jats:p>
dc.language	en
dc.publisher	Thomas Telford Ltd.
dc.relation.ispartof	Geosynthetics International
dc.relation.isbasedon	10.1680/jgein.20.00042
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 0907 Environmental Engineering
dc.subject.classification	Geological & Geomatics Engineering
dc.title	Influence of pocket shape on numerical response of geocell reinforced foundation systems
dc.type	Journal Article
utslib.citation.volume	28
utslib.for	0905 Civil Engineering
utslib.for	0907 Environmental Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2022-07-03T01:11:44Z
pubs.issue	3
pubs.publication-status	Published
pubs.volume	28
utslib.citation.issue	3

Abstract:

Geocells are three-dimensional cellular expandable mats used to improve the load-carrying capacity of weak subgrades. The expanded geocell pockets take the shape of a honeycomb connected to their neighbouring pockets. This manuscript deals with the importance of considering the exact shape of the geocell pockets in three-dimensional numerical modelling. The data for the calibration of the numerical models was obtained through laboratory plate load tests. The numerical simulations were carried out using finite difference software, Fast Lagrangian Analysis of Continua in Three Dimensions (FLAC3D). The walls of the geocell were modelled using geogrid elements having only tensile load capacity. The interfaces between the geocell walls and the infill soils were modelled using Mohr-Coulomb yield criterion. Three shapes of geocell pockets, viz. an exact honeycomb shape and simplified shapes (square and diamond), were considered in the numerical simulations. The numerical models with an exact shape of pockets have shown better agreement with experimental data, while the models with approximated shape overestimated the actual load capacity. The paper describes the modelling approach and the reasons for more accurate numerical predictions with the exact shape of geocell pockets compared to simplified pocket shapes.

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http://hdl.handle.net/10453/158540